Siemens Sinumerik 840D Series Function Manual page 120

4 Firmware Drive Functions
4.4 Closed-loop force control
Controlled system
gain of force
controller
5240 FORCECONTROLLED_SYSTEM_GAIN
Force controlled controlled-system gain
Unit: Default:
N/V 0.0
P component
of force controller
5242
FORCECTRL_GAIN [n]
Force controller P gain
Unit: Default:
- 0.0
5243 FORCECTRL_GAIN_RED
Reduction of force controller P gain
Unit: Default:
% 40.0
4-120
Minimum: Maximum:
0.0 1000000000.0
MD 5240 contains the controlled system proportional gain for the force control
loop.
Since the force control loop has an integral action, a unit integrator (I-action time
of 1 second) was subtracted from the controlled system to calculate the gain.
MD 5240 is preset by the "Calculate drive model data" routine.
The controlled system gain depends on the volume of oil in the cylinder and the
nominal volumetric flow of the servo solenoid valve. The value should not gen-
erally be altered.
The value in MD 5240 is the reference for the P gain of the force controller.
MD 5240 makes allowance for the effects of geometric dimensions.
The effect of the valve dynamic response is taken into account in MD 5242,
which means that the same gain value can always be set for an identical valve
dynamic response on different cylinders.
0...7 index of the parameter set
Minimum: Maximum:
0.0 10000.0
If force limitation and/or static friction injection is activated in MD 5241, the P
gain of the force controller is entered in this machine data.
The P gain reference is MD 5240, which contains a value representing the ef-
fects of the geometric dimensions.
The effect of the valve dynamic response is taken into account in MD 5242,
which means that the same gain value can always be set for an identical valve
dynamic response on different cylinders.
Minimum: Maximum:
0.1 100.0
SINUMERIK 840D/SIMODRIVE 611 digital, HLA Module (FBHLA) - 10.03 Edition
Cross reference: -
Related to:
Protection level:
HLA
3/3
Data type: Active:
FLOAT Immediately
Cross reference: -
Related to:
Protection level:
HLA
3/3
Data type: Active:
FLOAT Immediately
Cross reference: -
Related to:
Protection level:
HLA
3/3
Data type: Active:
FLOAT Immediately
 Siemens AG, 2003. All rights reserved
02.99
10.03